Connect MacBook 2015 USB-C to a DisplayPort 2560x1440
On this page Apple explains that It's possible connect the USB-C port on my new MacBook to a video output such as HDMI, VGA, and DisplayPort.
I just can't figure out how. The USB-C Digital AV Multiport Adapter supports HDMI but not DisplayPort.
Also I can't figure out if the USB-C Digital AV Multiport Adapter HDMI port supports a 2560x14450 resolution on a 27" display.
MacBook, OS X El Capitan (10.11.2), MakBook 12" 2015